[Crustacea 1] Fourteenth to eighteenth pair of appendages on the second to sixth abdominal somites.

[Crustacea 2] The biramous, paired, lamellar appendages of each pleonite.

[Crustacea/Amphipoda] Paired biramous swimming appendages on the segments of the pleon (first three abdominal segments). The rami are multisegmented and strongly setose.